Wall box for remote control systems



1952 F. H. OSBORNE WALL BOX FOR REMOTE CONTROL SYSTEMS 7 Sheets-Sheet 1 Filed Oct. 25. 1947 INVENTOR.

Feb. 12, 1952 F. H. OSBORNE WALL BOX FOR REMOTE CONTROL SYSTEMS 7 Sheets-Sheet 2 Filed Oct. 23, 1947 7- INVENTOR.

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1952 F. H. OSBORNE WALL BOX FOR REMOTE CONTROL SYSTEMS Filed Oct. 23. 1947 7 Sheets-Sheet 3 INVENTOR. fwa /7 055mm:-

Feb. 12, 1952 F. OSBORNE 2,585,401

WALL BOX FOR REMOTE CONTROL SYSTEMS Filed 00'6. 23, 1947 7 Sheets-Sheet 4 I JNVENTOR.

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Feb. 12, 1952 F. H. OSBORNE WALL BOX FOR REMOTE CONTROL SYSTEMS 7 Sheets-Sheet 5 Filed Oct. 23, 1947 QQW 1 Feb. 12, 1952 F. H. OSBORNE 2,585,401

WALL BOX FOR REMOTE QONTROL. SYSTEMS Filed Oct. 25, 1947 7 Sheets-Sheet 6 (6 I I I r JNVEN TOR. ffifD H, 0550K:

Feb. 12, 1952 F. H. OSBORNE WALL BOX FOR REMOTE CONTROL SYSTEMS 7 Sheets-Sheet 7 Filed Oct. 23, 1947 Patented Feb. 12, 1952 UNITED STATES PATENT OFFICE WALL BOX FOR REMOTE CONTROL SYSTEMS Fred H. Osborne, Snyder, N. Y., assignor to The Rudolph Wurlitzer Company, North Tonawanda, N. Y., a corporation Application October 23, i947, Serial No. 781,674

2 Claims. (Cl. 174-42) Still another chief object of the invention is I to provide mechanism for wire association and operation and capable of use as a two-wire or three-wire system by the use of the appropriate shorting unit such as a plug.

Other objects and features of the invention will be set forth more fully hereinafter.

playing of records in a remotely situated multiple Hereinafter the term central station is used to refer to the phonograph and its immediate control mechanism and the term local station or stations refers to what normally is called the wall box or boxes respectively where the manual selection is made.

All local stations provide for the selection of any one of a given number of selections, and all such selections so made at one or more local stations are registered and held in reserve at the central station, the selected records being played in the order of their selection except that duplicate selections are not duplicated.

- One chief object of the present invention is to prevent the phonograph delivering a play, when the system is coin controlled, without the payment for that play.

Another chief object of the present invention is to provide the local and central stations with appropriate wiring and mechanism whereby the wall boxes and phonograph may be used with a twoor three-wire low frequency system or with a radio frequency system as desired or required and with a minimum of changes.

A further chief object of the present invention is to construct and arrange each local station or wall box so that the several mechanisms included therein are readily'accessible for repair, adjustment or replacement purposes.

A still further chief object of the present in vention is to construct and arrange each local station or wall box so that, while usually arranged for wire association, such wall box is readily and quickly adapted to wireless association and with a minimum of effort, etc.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

In the drawings Fig. 1 is a perspective view of a so-called local or remote station or wall box.

Fig. 2 is a front elevation thereof with cover removed, the wireless unit shown in Fig. 12 and the three-wire plug shown in Fig. 11 being omitted for clearness.

Fig. 3 is a similar view of the back portion only of the box when the intermediate mechanism (shown in Fig. 4) between it and the cover has been removed.

Fig. 4 is a rear elevation of the intermediate mechanism when exposed, the front thereof being shown in Fig.2 and the wiring being omitted for clearness.

Fig. 5 is a perspective view of the wall box or local or remote station looking into the same when the cover is removed, the intermediate mechanism and frame being swung away but not detached from the back portion of the box.

Fig. 6 is a sectional view taken on line 6-6 of Fig. 4 and in the direction of the arrows.

Fig. 7 is an elevational view of one side of a switch structure.

Fig. 8 is a. similar view of the opposite side thereof.

Fig. 9 is a wiring diagram of the major portion of the electrical system embodied in the invention and that which is common to both threewire wired and radio or wireless types.

Fig. 10 is a similar view of the selective power supply portion utilized with the circuits shown in Fig. 9.

Fig. 11 is a diagrammatic view of the so-called two-wire system shortin lug.

Fig. 12 is a similar view of the three-wire system shorting plug.

Fig. 13 is a. diagrammatic view of the so-called wireless attachment embodiment.

Fig. 14 is a view similar to Fig. 2 with the wireless unit mounted on the said intermediate portion.

Fig. 15 is a perspective view of the lower end of the wireless equipped unit looking at the same from the rear of Fig. 14.

Fig. 16 is an elevational view of a triple lobe switch included in the invention, the cover being omitted.

Fig. 17 is a sectional view of said switch and is taken on line l'll'l of Fig. 16 and in the direction of the arrows.

Fig. 18 is an elevational view of the coin claw, certain associated cams, cam activated levers and the so-called main power shaft of the invention, certain of the parts being shown in Figs. 2 and 14.

Fig. 19 is a side elevation thereof and shows in greater detail certain parts shown in Fig, 6.

Fig. 20 is a perspective View of the selection button clearing mechanism and its association with the mechanism shown in Figs. 2, 18 and 19.

In Figs. 2, 3 and 5, indicates a back plate or base to which is attached an intermediate frame construction H, see Figs. 2, 4 and 5. Herein the latter, see Fig. 4, includes at one side spaced, offset, and aligned depending pins 12 receivable by complementary socket portions 13 carried at one side of base it, see 3. Figs. 3 and -1- show the plate and construction detached while Fig. 5 shows the latter swung outwardly upon the base to expose the rear of the frame and mechanism carried thereby.

Extending upwardly from base IQ, see Figs. 1, 2, 3, and 5, is the projection 14 that has mounted thereon the plunger E5, the key controlled lock l6, and the coin socket or inlet 11. A cover, see Fig. 1, has top 18, front 19, sides and a bottom not shown. The top is recessed as at 21 to accommodate projection I4 on base I0. Portion 54 projects forwardly of the base 10 and overlies the intermediate frame structure H when the latter is collapsed against the base as shown in Fig. 2.

The front 19, see Fig. l, is recessed as at 22 and louvred as at 23 to receive selection or program legend strips not shown. Same are illuminated by light bulbs 24, see Fig. 2, carried by the main frame ll of the intermediate structure. This recess 22 preferably is closed by a glass, etc., not shown, through which the selection designations are readily legible. The front 19, see Fig. 1, is also apertured as at 25 to expose the projecting individual selection buttons 26, shown also in Fig. 2.

The plunger [5 constitutes a coin Or slug return control, the slug being released at recess 20 see Fig. 1, when plunger 15, see Fig. 2, actuates arm l5. Buttons 26 constitute individual selection controls, each of the latter controllin a switch 26 In the left hand portion of Fig. 9 same are diagrammatically arranged in one vertical series while in Figs. 1 and 2, the buttons 26 are shown divided and disposed in two vertical series.

The base 10, see Figs. 3 and 5, includes forward, apertured projection 21 and notch 28 in its lower end. The cover in its bottom carries a headed stud, not shown, or a hook that registers with the notch so that bar 29, notched at 29-A, see Fig. 3, when lowered can lock the cover to the base when the frame H is collapsed thereto.

The base I0 near the top thereof mounts a transversely disposed longitudinally elongated cover locking bar 30, and the same is associated with looking lugs (not shown) and interiorly carried by the cover top portion I8 near the open end thereof. As shown in Fig. 3 the arm 3| and pin 32 effect bar reciprocation for cover locking and unlocking through key controlled lock 16. Arm 33, with pins 34 and 35 and pivoted at 36, is tiltable in accordance with bar 30 movement to effect raising and lowering of the cover locking bar 29. Thus the cover is three-point locked to and unlocked from the base [0 with the frame I I therebetween.

The base I0 mounts a well defining wall 31, see Figs. 3 and 5, and pivoted thereon at 38 is a finger operable catch 39 having notch 40 for engaging a headed pin 41 carried by the frame ll for holding the frame rigidly to the base.

When access is desired to the intermediate mechanism for any purpose, the cover is first unlocked and removed, the finger lock 39 is then released and the frame II is then tilted to expose the rear thereof if desired, or the frame can be removed from its pivotal support for, see Fig. 3, the cable 42 terminates in loose plug 43 that, even when the frame is in open position, as in Fig. 5, can be plugged into multiple socket 44. Of course, when the frame is detached from the base this socket and plug connection is separated.

In Figs. 3 and 5 the master fuse is indicated at 45. Current supply is suitably introduced to the device through the base as at 21 and conveyed by plug 43 aforesaid to the frame I I carried electrical operative and control elements.

It is believed no further description or illustration is necessary to fully disclose the detachable and swingable mounting of the frame ll upon the base 10, nor the locking of the same thereto, nor the locking of the removable cover over the frame I l and to the base It! to fully envelop the frame and the mechanism carried thereby.

It is to be understood that coin inlet IT can accommodate individually any one of several denominations of coins such as a nickel, dime or quarter. After coin deposit, it discharges through frame carried coin chute 46 to a detector device of commercial type.

If not rejected and returned to the depositor it passes to a master control switch and then to an evaluator so as to register one, two or five plays and thence passes to a coin box. In any event the evaluator suitably actuates an accumulator to store up the depositor payment effect, and following playing of one record an accumulated unit is subtracted until all coin value accumulated is exhausted. As hereinafter pointed out the accumulator corresponding advance is 2, 3 and 6, respectively for values of 1, 2 and 5, respectively.

Selection, obviously, is made by pressing in the selected button or buttons 26 and these selections are held until the corresponding record has been played. Since there usually are several wall boxes in parallel, only one selection, if two or more boxes are actuated to make that selection, will be registered and played. Of course all depositors making such single common selection from different local stations will be satisfied simultaneously.

Following registration of the selection, the button or buttons 26 are returned to normal (cover projected or extended) position. As shown in Fig. 9, the playing is not effected for plural selection in the order of selection but only in the order of sequence as determined by the switch and circuit set up or arrangement.

If desired, each coin box 9, see Fig. 2, may be a separable unit and detachably applied as at 9, see Fig. 3, to the wall box and included therein. It can be serially numbered. Thus the serviceman and/or collector, can at each visit, regu lar or irregular, as desired or required, remove the sealed coin box 9, and replace same with an empty box. Thus actual coin counting can be effected at the home office of a community system or by the management only of an establishment having a large number of coin deposition selectors such as wall boxes on the establishment premises.

Reference will now be had to Figs. 9 to 13, more particularly rather than to the correspondingly illustrated parts in Figs. 2 to 8 and 14. As stated, Fig. 9 shows the major portion of the electrical circuits common to all three types of operation and such circuits, etc., carried by the frame II although Fig. 10 does show that a portion of the electrical circuits, are carried by the base Ill. The two disclosures are incomplete, however, in that there must be applied thereto either the shorting plug of Fig. 11 or that of Fig. 12 for wired use, or the radio unit and plug of Fig. 13 for wireless use, all as more fully explained hereinafter.

Referring to Fig. 10, indicates the master fuse and 43 the plug type connector. Immediately above same in Fig. 9 is the socket type connector 44 aforesaid. In that same figure and slightly to the right thereof is a multiple socket 41. This also appears in Fig. 2, lower left hand corner.

As stated, when wired service or use is contemplated, the shorting plug 48, see Fig. 12, or

plug I48, see Fig. 11, is applied to said socket 41. When, however, wireless service or use is desired the plug 49, see Fig. 13, is applied to the Socket 4! shown in Fig. 9. When wireless use is desired the corresponding terminals and 5|, see Fig. 10, on the base are connected to the ends of a conventional plug and a two-wire supply indicated as at 52 and 53 and terminating in plug 54. When, however, three-wire use is desired, the base mounted terminals 55, 5S and 51 are suitably connected to the ends of the three-wire supply. In either event, the two-wire and threewire supply lines are introduced into the wall box through the aperture in portion 21, see Figs. 3 and 5. The five terminals, 50, SI, 55, 56 and 51 aforesaid are illustrated in Figs. 3 and 5 as well. The remainder of the circuit shown in Fig. 10 other than the terminals and fuse may be carried by the base and suitably connected thereto as shown in Fig. 10, the several connections being omitted from Figs. 3 and 5 for clearness.

On the rear of frame H, see Fig. 5, are two spaced series of six contacts 58 and their corresponding representations are likewise found in Fig. 9. Similarly in said Figs. 4 and 5 are found the relays 59 and 60 exposed on the rear of the frame II and same also are illustrated in Fig. 9. The switches El and 62 respectively associated with said transformers are also found in Fig. 9. The rotative arm 63, circular series of contacts 64, see Fig. 4, and motor 65, see Fig. 6, also are illustrated in Fig. 9. At this point, therefore, it seems desirable to mention that the plug 48 shown in Fig. 12 is applied to the structure shown in Fig. 9 for current supply to the three terminals 55, 56 and 51 aforesaid.

The wall box, the essentials of which are diagrammatically illustrated, is conventionally sold as a three-wire system. When two-wire operabe had more fully hereinafter. Thus the wall 6 box can be constructed for universal use and utilized for two-wire wired, three-wire wired or wireless operation interchangeably and as desired.

Reference will be had more particularly to Figs. 4, 6, 7 and 8, and Fig. 9, for the electrical association of the parts shown in the other figures. In Fig. 6 motor 65 through pinion 66 operates a gear train 61 rotating shaft 68 on the outer or rear end of which is mounted member 63 aforesaid. Member 63 includes yieldingly mounted contacts 69 and "III, the former selectively engaging contacts 64 on insulation plate 64 and the latter engaging contacts II on said plate.

:' Note member 63 is not of equal length on opposite sides of the shaft.

Also rotatable by the shaft is the triple lobe member I2 having yieldingly mounted contacts I2-'I3 and I4 with a median contact I5. An insulation plate I6 includes arcuately disposed stepped resistors TI, see Fig. 9, and interiorly disposed contacts '58 and i9. Resistors 11 are of two, three and six step type corresponding to the coin values aforesaid and are shown in Fig. 9.

Stationarily supported is an insulation plate 89 having terminals and contacts on opposite sides thereof. This plate is centrally apertured and rotatable therein is insulation disk 8i suitably secured to shaft 68 for rotation thereby. Opposite sides of this disk carry ring contacts so disposed that they rotate between the opposite side mounted contacts on plate 80. One side of disk 8| constitutes the relay release switch while the other side constitutes the motor full cycle switch. All the aforesaid is more clearly illustrated in Figs. 7 and 8 and diagrammatically illustrated in Fig. 9. Herein three contacts always are associated with a ring contact, the ring contacts being insulated from each other.

In Fig. 9, 82 indicates an accumulator switch which is open until a coin is registered. 83 indicates the accumulator coil or relay. Also in Fig. 9 there is illustrated a .double pole, double throw testing and use switch 83 the first and third left hand contacts being for testing and service use while the second and fourth contacts are for normal or play purposes.

In Fig. 4, 83 indicates that coil and same has the core 84, the pole structure 85, and keeper 89 carried by arm 8! pivoted at B8 and spring constrained as at 89. Said arm 88 terminates in arcuately disposed teeth 99 and 9I, the two a1- ternately engaging ratchet 92 carrying stop pin 93 to engage stop 94 to limit clockwise rotation of the ratchet incident to step actuation when tooth 9| is released therefrom and the ratchet is advanced one tooth by a coil spring not shown in Fig. 4 but concentric with the ratchet support.

The ratchet is reversely actuated step by step by the dual arm structure 95-96, the latter at 91 pivotally supporting a pawl not shown that engages the ratchet. The relative position of arm portions 95 and 96 is adjusted at 98 and same are constrained by a spring not shown. The arm structure is constrained by spring 99 to released position and is rocked by an actuator on shaft 68. The pawl, not shown, is constrained by spring ISO to non-ratchet engagement. Stop IOI limits'dual arm structure positioning when idle.

Insulation member I92 carried by the ratchet is operatively associated with the longer arm I93 of a normally closed switch having associated arm I94. When member I02 engages arm I93,

incident to dual arm rotation (counter-clockwise) of the ratchet, this switch is opened. At such time also the stop pin 93 has almost rotated 360 and engages the opposite side of stop 94.

Thus the ratchet is step by step reversely rotated within the limits of the stops aforesaid to accumulate the coin value deposited and deduct the plays as made. The number of ratchet teeth determines the extent of money value which can be accumulated.

In Figs. 14 and 15, I49 indicates the chassis of the wireless embodiment diagrammatically illustrated in Fig. 13. In said figures I04 indicates a bracket support and IE5 in Fig. 14 indicates a connector ket. I06 indicates tubes and III! indicates the crystal adapting switch. The tubes are not identical, see Figs. 13 and 14. The chassis therefore, when used, is disposed forwardly of the coin box 9, see Fig. 2.

In Fig. 9 below the triple lobe switch indication "siz are illustrated the three coin switches I58, ISS selectively controlledv by a nickel, dime, and quarter, respectively. 59 indicates the coin relay coil and so the selector button relay coil. The former operates or controls four switches, three of which are normally open as shown ai" is of which is; normally closed. Coil. 60 opera 3 or controls three switches, all of which are normally open. In the lower central portion of 9, its indicates the power transformer.

Reference will now had to 2, i and 6. In the latter the shaft has suitably secured to it as by pin 5 It a sle ve l i I. Rigid with and rotatable by sleeve Ii! is pair of spaced cams H2 and se arated by a plate H4. A lug II2 seats in a notch ii. in the hub of member '12- previously described. A pin '52 retains the aforesaid. in assernb d relation.

Now rer1 to Fig. 2 the sleeve 5 I l is shown fiatted to ar the said ns. Cain l I3, see Figs. l8-20, a lower arm H rigid with rock shaft ti:- o arm IF terminating in coil te member I I8 disposed in offset relation, see Figs. 6, l8 and 19. A spring IIS, see 2, normally constrains the follower to cam contact.

18-20, engages follower 5" are; i2I held with rock shaft i2 ereon upwardly extending arm I23 slot I2 A stud I25 carried by one arm 5 of a bell crank pivoted at I27, is seated in said slot so that the bell crank is cyclically -n of shaft 88.

w of said bell crank actuates arm tits on rocl I3 carrying plate arm I3I at opposite ends. Latch bars I32 are operatively associated .vith the selector buttons 25, or rather their stems, and said bars in turn are associated with clearing plungers i533, spring constrained at its to normal position. When arm I3I is tilted it actuates members 533 to eiiect return of button to exposed position in opposition to spring iS 's. Thus all "uttons are cyclically returned to proiecte 00s....n.

Cam II2, see Fig. 18, also cyclically oscillates .5 pivote at 53% upon plate H4. This arm red toward said cam and its ...;minates in a stud I31 disposed in the notched upwardly extending end of lever member see Fig. 20. Thus cyclically the ratchet is actuated by said stud, as it were. Thus the ra chet is rotate counter-clockwise one step, or two teeth, to register cancellation of a play. The accumulator coil, however, is actuated in the accumulating direction by the coin deposited and to the extent indicated in accordance with the value of said coin. Herein approximately twenty plays can be accommodated by the accumulator.

The respective coin switches I08, I08", and I08 in Fig. 9 are shown in Fig. 2 and indicated by the numeral IilB therein. The tiltable coin levers, of which there are three, positioned side by side, are indicated by I08 and pivoted at 18. Thus each coin delivered from the claw tilts the appropriate lever causing the other end to close the respective coin switch. The tilt of members H38 is limited by stop I88 see Fig. 2, and coins, after effecting tilting, are directed by guide 9 to coin box 9. The accumulator switch 82 is essocated with the coin switch as previously described and diagrammatically illustrated in Fig. 9.

In Figs. 16 and 17 there is illustrated in detail the triple lobe switch unit 12* which as stated is also illustrated in Figs. 6 and 9. The body portion I40, see Fig. 1?, is of plastic or molded insulation material and includes cavity HI and metallic sleeve I42. Surrounding said sleeve is neck M3 and a shoulder I44 to receive spring stampings I45 and I46. Pierced bosses Ml on the body portion are furnished for spacing cover I48 and riveting it in place in the rabbet I50 of said body.

Springs 545 and I45 are ogival in outline and are pierced with openings of an area calculated to leave margins of predetermined breadth. This breadth governs .ie pressure to be exerted by the contact [5| which is riveted to the said spring near the outer end thereof.

Said contacts 5| extend through the holes I52 in housing 14 In case of multiple spring: a washer I52 may be interposed between same. When the switch is to control multiple circuits the washer should be of insulation material. Herein i is shown as of conducting material and the spring arms are in electrical contact. Washer I54 and disc 55 complete the assembly.

Thus the contacts of this unit may be preloaded to known optimum pressures which do not change because the arms are protected from bending out of their preset form. This unit also is shock proof and practically dirt proof. The long string bearing provided by the sleeve I42 on the shaft 88 permits marked inequalities, when required, of contact pressure required for successful operation.

The three tip disposed contacts I5I contact the two, three, and six step resistor contacts, see Fig. 9, while the median contact I5I, see Fig. 16, contacts the single and dual spaced inner disv posed contacts, see Fig. 9, carried by the insula- Reference will now be had primarily to Fig. 9 and the supplementary diagrammatic circuit figures. Ffhen a coin of the selected value (5, 10 or 25) is deposited the same passes through the detector device, if not rejected, and lands upon the appropriate portion of the claw I I8 and then tilts the corresponding lever Hi8 to close the corresponding switch I08, I08, or I08 to ground.

Contact arm "52 contact 18 and line 18 thus complete the circuit to relay coil 59. When energized the three upper switches BI are closed and the lower one is opened. The first or interlock switch is designated BI the second or motor switch is designated SI the third or isolation switch is designated 6| and the fourth is designated 6|.

When relay coil 58 is energized the motor oil 9 cult is closed at switch 6| the interlock switch is closed and switch 6| isclosed. The latter closes the circuit to line 15 and the accumulator coil 83. When this coil is energized switch 82 is closed to connect line 82 to line 82 to selector button relay coil 60, which, when energized, closes the three switches, 62 (interlock) switch, 62' (motor) switch, and 62 (isolation long pulse and selection) switch, respectively.

Thus the first coin initiated impulse causes the accumulator switch 82 to close and remain closed while all such impulses are being registered by the accumulator and thereafter holds closed until opened as hereinafter described.

The ovoidal shaped arm 63, see Fig. 4, the triple lobe arm 12*, see Figs. 16 and 17, and the member 8|, see Figs. 7 and 8, are all simultaneously rotated by motor 65 so that when the circuit is initially closed at 18 by coin deposition at the respective coin switch, this comprises a pick up circuit and motor 55 is energized because then switch 6 l is closed. Switch 6 I by then opening, prevents a circuit from contact H of the ovoidal arm controlled switch to the coil of relay 60 through switch 6W controlled thereby.

During the registration aforesaid, the motor 65, as stated, also rotates switch member 8| of the relay release switch, see left hand disk 8| in Fig. 9, until the notch H in its edge passes the contact in series with the switch 6| of relay 59, thereby deenergizing this relay coil.

Cam follower H5, upon motor rotation of cam H3, then releases the coin to the coin box thus permitting the opening of the respective coin controlled switch H18. Further rotation of motor 65 then effects, through the right hand switch 8|, an opening of the motor circuit.

When the pick up relay 59 is energized as initially set forth, the selector relay 60 is energized. for selection circuit maintenance. Hence, a, pick up and stick relationship is established. When relay 59 is deenergized, switch 6| a is again closed thereby connecting switch 6| with the left hand relay release switch 8 I. This prepares the remote control unit for selecting purposes.

Accumulator switch 82 having been closed as aforesaid by actuation of the coil 83, a circuit is closed from the ground of the relay release switch 8| through switch 6V to segment 1| of the selector switch and thence through the ovoidal arm contacts and 69 to segment I59 and line 69 to the button 26 actuated switches 26 and from the actuated (selected) switch 26* by line 82 to the accumulator switch 82, thence, through coil 60, lines 60 and 50 to tap 19 on the secondary of transformer I09 grounded at tap IOB This causes the relay 60 to be energized and remain so by reason of the contact of its locking switch 62 .now closed. Switch 62* also is closed to prepare a circuit from tap 09 of transformer N39 to the motor full cycle switch 8| (left) thence, through motor 65 to pin 4'|8' of plug 41 which is jumper connected to pin 4'|-3 through the socket, which pin 4'|-3 leads to tap I09 of transformer H19. This circuit, which is open at the full cycle switch, is paralleled by a circuit from motor 65 through switch 62* to the normally open contacts of the switch 26 controlled by the selector buttons 26, thence, to pin 44-6 of the plug and the socket 44 which is connected to the feeder by terminals 50, see Fig. 10.

The selector buttons 26 are mechanically latched at the beginning of a selection cycle and freed at the cycles end by the apparatus shown in Fig. 20, the latch operating to hold in the iii) 10 button which has been pressed, and prevent all others from being pressed. Thus the normally open contacts of a pressed button are held closed during the greater part of a selection cycle. At the same time the normally closed contacts are held open.

Hence, when a button 26 is latched, a circuit is closed through its normally open switch 26 to motor 65 which in rotor rotation carries with it the cycling dics 8| left, 8| right, multi-lobe switch member H and switch arm 63 of the relay release switch and motor full cycle switch.

As the rotor of themotor 65 starts rotating contacts 10 and 69 of arm 63 bridge the contacts or segments I l and M The latter is grounded at pin 4l4 of plug 41 while through the former (segment 1P) a circuit runs to switch 62 of r'e lay 6B, thence through the service-play switch 83 to pin 41-1 of plug 41 to cathode of the 6V6GT/G tube I06 (to?) Fig. 13.

Thereafter contact 69 revolves on the circle of contacts 64, establishing a circuit through each and the normally closed points of buttons 26 until it reaches the contact 64 connected to the switch points '26 of the depressed button 25. The circuit now being open beyond that particular button, the contact 69, on continued rotation, conveys no current after leaving such depressed button corresponding contact 54. Each make and break at the prior contact 64 so made causes an impulse to be sent through 64 to the cathode of said tube I06 (seetop of, Fig. 13) ,and as described above for wireless operation. For wire operation the impulse is sent to the stepper at the central station.

The notch in the end of the motor full cycle switch rotor 8| and the radii of contacts associated therewith, see upper 'righthand portion of Fig. 9, are angularly arranged so that when the notch registers with the contacts, the rotary switch arm 10 comes to rest upon segments or contacts 69 and II. With each such cycle the accumulator is reversed one stepuntil its switch 82 is opened, the play values accumulated on it being removed successively until the number of selection cycles equals the number of impulses transmitted to the accumulator during the coin registering cycle.

All this occurs at the local station whereas the signal (impulses determined by the selected selector switch 26*), are transmitted to the central station where a stepper is actuated to register the selection and hold it until the play is made. When the selection is registered other selections 'may be registered in succession until the coin value is exhausted. Since the present invention may be utilized with many forms of such registers and central station apparatus no specific reference need be had thereto in this disclosure.

Two wire system In the two wire system, the plug I48 shown in Fig. 11 is applied to socket 41, see Fig. 9. Plug 54 and lines 52 and 53, see Fig. 10, are utilized. Thus the line cord and two wires are connected from the wall box (represented by Fig. 9) to the phonograph, stepper and register not shown.

Terminals --5|supply current to the transformer I69 and motor 65. In two wire operation ||1 volt taps I09. and I09 ontransformer I09 are used. These taps are preferred because such current as is drawn from the supply lines will not decrease the voltage.

Three wire system In the three wire system the plug 48, see Fig. 12,

is used. It is applied to socket 41, see Fig. 9. Current supply is by a three wire plug connection terminating at terminals 55, 56 and 51, see Fig. 9. To insure proper voltage, because of decreased current that can be drawn in the secondary, taps I09 and Hi9 are utilized on the primary and taps Hi9 and I09 are used on the secondary.

Wireless system In wireless operation plug 49 and associated circuit shown in Fig. 13, is applied to socket 41, see Fig. 9. The two wire plug 54 and lines 52-53 are used for power supply purposes.

Since the transmitter shown in Fig. 13 is the briefiy described herein for no claim herein is specifically made thereto. This application is Serial No. 717,716, filed Dec. 21, 1946.

The oscillator circuit is as follows: Feed back is taken across coil L-2, fed back through capacity 0-9 to crystal C and one (control) grid of the amplifier tube 106 (top tube). Resistance R-l is the return to ground for this grid. Condenser C-i acts with condenser 0-9 as a voltage divider to apply predetermined voltage. Cathode resistor R-2 provides proper bias and condenser C-2 is the by-pass for same.

Condenser C-IO and 0-3 are respectively a filter and bypass condenser, While R-3 indicates a bleeder resistor. Tank coil L-l is the oscillator and connects to the plate of the amplifier tube. This plate circuit is tuned to crystal frequency by combinations of capacities C-4, C-5, C-6 and C-1 The first three are cut in one at a time by switch I01 depending upon which crystal is used, there being three, which resonate at frequencies of 221, 226 and 231 kc. Capacity C-l' is the trimmer to adjust for peak performance, that is, highest voltage output. This capacity compensates for manufacturing variations such as errors in inductor and capacitators.

The lower tube I06 is the rectifier tube. L-l-B is magnetically coupled to oscillator coil LI in such a manner that proper relationship between tu'be, plate circuit and power line is attained without effect on the frequency of the oscillating circuit. Capacity L-8 is in series between coil L-i-B and the power line to isolate power line frequencies from coil L-l-B.

Service switch 83, see Fig. 9, when swung to the left, takes control of the oscillator from the relay release, motor full cycle and selector button switches and puts a steady state signal directly into the power line for the purpose of supplying signal for alignment adjustments in the receiver not shown but previously referred to as included at the central station. This eliminates the use of a signal generator.

Briefly the foregoing selection operation may be summarized as follows: Deposition of a proper coin initiates motor operation, the control being of pick up and stick character. During such motor rotation of single cycle type the coin value is first registered upon the accumulator and then impulses, corresponding to the selected selection, are generated and transmitted to a receiving device for record selection and play purposes. Upon playing or registration of the selection, the accumulator is de-accumulated one play, that is, the ratchet wheel is reversely rotated one step. Since in cyclic motor operation a cam thereon effects a cancellation equivalent to one play, coin deposition always provides an additional pulse from the accumulator coil. The coin is held until value accumulation. As stated, selection cannot be made, that is, signals be sent even though the button be depressed, as long as the system is registering a coin value.

The accumulator coil is pulsed plus one because subject of a copendmg application it will be is, every time the motor rotates shaft 68 one revolution it cancels one play off the accumulating ratchet through the mechanical actuation of the cam as described.

Contact '39 of the ovoidal switch is provided to prevent cheating the wall box by jiggling" the line plug to that wall box. Also in three wire operation the circuit from contact ll to H provides the long pulse necessary to set up" the stepper in the central station through voltage phasings, thus preventing the cheating of the phonograph at the central station.

As previously explained, a change from two to three Wire operation, etc, requires use of different taps on the transformer to secure proper voltage, thus the extra winding between taps I09 and Hi9 for three wire and the extra Winding between taps lDQ and [fis for two wire make up the loss.

While the invention has been illustrated and described in great detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character.

The several modifications described herein as well as others which will readily suggest themselves to persons skilled in this art, all are considered to be within the broad scope of the invention, reference being had to the appended claims.

The invention claimed is:

1. A wall box structure supporting and enclosing selecting and controlling circuit controlling switch mechanism comprising a flat supporting back base; an intermediate frame swingably and removabiy supported on said base and supporting on its opposite faces circuit controlling operated parts; sub supporting frames supported on the front face of said swingable frame at the opposite edges thereof; circuit controlling switch members carried by said supporting sub frames and a cover member having side and end walls embracing said frames and having openings in its face to accommodate the last mentioned circuit controlling switch members.

2. A wall box structure supporting and enclosing selecting and controlling circuit controlling switch mechanism comprising a fiat supporting base having formed on its front face a receiving pocket; an intermediate frame swingably supported at one side of said base and supporting on its opposite faces circuit controlling apparatus, said pocket on said supporting base being adapted to receive those circuit controlling parts supported on the rear face of said swingable frame; at least a portion of the operating parts supported on the front face of said frame comprising projecting members, and a cover member having side and end walls embracing said frame, having openings in its front face to accommodate said projecting members on the swingable frame; and

means for interlockixi gly connecting said cover The following refeinbes are of record in the file of this patent:

UNITED S'II A'I'ES PATENTS Number Name Date 1,174,809 Bisseli Mar. 7, 1916 1,561,490 Schlupp Nov. 17,; 1925 1,669,806

Bretz May 15,1928

Number 14 Name Date Oberst June 25, 1929 Schermack Oct. 15, 1929 Loock Dec. 8, 1936 McNaney "May 6, 1941 Kleinknecht June 3, 1941 Andres Dec. 9, 1941 Boyajian Nov. 6, 1945 Rockola et a1 Nov. 20, 1945 Boyajian Nov. 26, 1946 Rees Mar. 9, 1948 Andrews Apr. 20, 1948 

